I will write firmware for nrf52, nrfxx and other nordic controllers

Experience with NRF52832, Nrf52840, and another Nordic development kit.

I also have experience on Arduino, Raspberry Pi, Orange Pi, or Beaglebone as a prototyping platform.

Both 8 and 32-bit embedded design experience including ARM Cortex M0, M3, M4, STM32Fxxx, AVR 8 & 

  16bit, Microchip Pic 8/16 & Pic24 and with ESP8266 and ESP32 boards

Proficient in PCB Design, manufacture, and small-scale assembly and testing

Experience working with robotics hardware like motor controllers, motors(servo's, stepper, DC, etc), 

  sensors and other peripherals

Experience building shields and HAT's for Arduino and Raspberry Pi, Omega , Beagle Bone